Pediatric Imaging

Which Imaging Is Best for Suspected Abuse in Children Over 2 Years Old?

May 29, 2026 · Pouyan Golshani, MD, Interventional Radiologist

A four-year-old is brought to the emergency department after a reported fall down a few stairs. The caregiver’s history is inconsistent, and on examination, you note patterned bruising on the child’s back and upper arms. The child is alert, their abdomen is soft, and they are moving all extremities without obvious pain or deformity. You are concerned for non-accidental trauma but see no clear signs of neurological, visceral, or major skeletal injury. What is the appropriate initial imaging step to evaluate for occult injury in a child of this age?

This clinical workflow article addresses this specific question, focusing on the initial imaging for a child older than 24 months with a concern for physical abuse but no clinically apparent injuries. According to the American College of Radiology (ACR) Appropriateness Criteria, the recommended initial study, Radiography area of interest, is rated Usually Appropriate.

Who Fits This Clinical Scenario for Suspected Abuse Imaging?

This guidance is tailored for a specific patient population. Correctly identifying if your patient fits this scenario is crucial for applying the right imaging strategy and avoiding unnecessary radiation or missed diagnoses.

Inclusion criteria for this workflow:

Age: The child must be greater than 24 months old. The patterns and prevalence of injuries in toddlers and older children differ from those in infants, leading to a distinct imaging algorithm.
Clinical Suspicion: There is a concern for physical abuse based on the clinical history (e.g., an inconsistent or implausible explanation for an injury), physical examination findings (e.g., specific patterns of bruising), or other social or environmental risk factors.
No Obvious Major Injury: The child has no clinically apparent neurological signs (e.g., altered mental status, seizures, focal deficits), skeletal injuries (e.g., deformity, crepitus, refusal to bear weight), or visceral injuries (e.g., abdominal tenderness, distension, seatbelt sign). This workflow is for detecting occult injuries.

Exclusion criteria (patients who require a different workflow):

Infants and Young Toddlers (≤ 24 months): Children in this age group with a concern for abuse typically undergo a full radiographic skeletal survey as the initial step due to their higher risk of occult fractures and different injury patterns.
Children with Neurological Signs: Any child, regardless of age, with clinical findings suspicious for a Central Nervous System (CNS) injury (e.g., lethargy, vomiting, bulging fontanelle in younger children) requires dedicated neuroimaging, a separate ACR scenario.
Children with Signs of Visceral Injury: A child with abdominal pain, tenderness, distension, or significant truncal bruising requires a different imaging pathway, often involving CT or ultrasound of the abdomen.

What Diagnoses Are You Working Up in This Scenario?

When ordering targeted imaging for a child over two with suspected abuse, the goal is to identify occult injuries that are not evident on physical examination. The differential diagnosis guides the interpretation of the imaging findings in the context of the clinical concern.

Occult Fractures This is the primary diagnosis of concern. While older children are more verbal and can often localize pain, they may not report it, or an injury may be subtle. In contrast to the classic metaphyseal corner fractures seen in infants, fractures in children over two may include rib fractures (particularly posterior), long bone fractures from direct blows, or subtle skull fractures. The imaging is intended to confirm or exclude a fracture in an area suggested by more subtle physical findings, like localized swelling or tenderness elicited on careful examination.

Significant Soft Tissue Injury Although plain radiography is not the primary modality for evaluating soft tissues, it can provide crucial clues. A radiograph may reveal significant soft tissue swelling, which can pinpoint the site of trauma even if a fracture is not visible. This finding can corroborate the concern for a direct blow to the area and may prompt further clinical evaluation or, in some cases, different imaging modalities if a deep hematoma or other injury is suspected.

Differentiating Accidental from Non-Accidental Trauma The imaging results are a key piece of evidence in distinguishing between accidental and inflicted injury. An accidental injury, like a simple toddler’s fracture of the tibia from a low-energy fall, has a characteristic radiographic appearance and clinical context. In contrast, findings such as multiple fractures, fractures in different stages of healing, or fractures at high-specificity sites (e.g., posterior ribs, sternum) raise a high suspicion for non-accidental trauma.

Underlying Bone Disease While less common, conditions that predispose to fractures, such as osteogenesis imperfecta or nutritional rickets, must be considered. Radiographs can sometimes reveal features suggestive of these conditions, such as generalized osteopenia, bone deformities, or poor mineralization. While the primary goal of the exam is to identify acute trauma, radiologists are trained to look for these ancillary findings that might suggest an alternative diagnosis.

Why Is Targeted Radiography the Recommended First Step for Older Children?

The ACR designates Radiography area of interest as Usually Appropriate for this scenario, reflecting a consensus that this approach provides the best balance of diagnostic utility and safety for this specific age group.

The rationale is rooted in the changing epidemiology of abusive injuries with age. In children over two, injuries are more likely to result from direct blows, and the child is often able to localize pain or will have physical findings (e.g., bruising, swelling) that point to a specific area of concern. A targeted radiograph allows for high-resolution evaluation of this area with minimal radiation exposure. This focused approach directly answers the immediate clinical question: is there a fracture at the site of suspected impact?

Why Other Studies Are Rated Lower

Understanding why alternative, more comprehensive studies are not the first choice is key to appropriate ordering.

Radiography skeletal survey: This study is rated May be appropriate (Disagreement). A full skeletal survey provides a comprehensive look at the entire skeleton but carries a significantly higher radiation dose (pediatric RRL ☢☢☢ 0.3-3 mSv) compared to one or two targeted views. The panel’s disagreement highlights the clinical nuance involved. While the default approach is targeted radiography, some experts argue for a skeletal survey if the suspicion for abuse is very high but there are no localizing signs to guide targeted views. However, for the typical presentation in this scenario, it is not the recommended first step.
CT head without IV contrast: This is rated Usually not appropriate. This scenario explicitly excludes children with clinical signs of neurological injury. Without such signs, the probability of finding a significant intracranial injury on a screening CT is low. Ordering a head CT would expose the child’s brain to ionizing radiation (pediatric RRL ☢☢☢ 0.3-3 mSv) without a clear clinical indication, violating the ALARA (As Low As Reasonably Achievable) principle.

The guiding principle is to match the imaging test to the clinical question. For a localized concern in a child over two, a targeted radiograph is the most logical, safe, and effective initial examination.

What’s Next After Targeted Radiography? Downstream Workflow

The results of the initial radiograph will guide the subsequent clinical and diagnostic pathway. The workflow branches based on whether the findings are positive, negative, or indeterminate.

If the radiograph is positive for a fracture: A positive finding confirms an injury and significantly increases the concern for non-accidental trauma, especially if the fracture pattern is inconsistent with the provided history. The immediate next steps include:

Medical Management: Appropriate orthopedic consultation and management (e.g., splinting, casting) for the identified fracture.
Child Protection Consultation: This finding mandates a formal consultation with the hospital’s child protection team and a report to the appropriate child protective services agency.
Consider Broader Imaging: The presence of one inflicted injury raises the probability of other occult injuries. At this point, a full radiographic skeletal survey becomes strongly indicated to screen for additional fractures. This is a critical step, as identifying multiple injuries can be vital for the child’s safety and the subsequent investigation.

If the radiograph is negative: A negative targeted radiograph of a specific area of concern is reassuring for that location. However, it does not entirely exclude the possibility of abuse or injury elsewhere. The next steps depend on the overall clinical picture:

Re-evaluate Clinical Suspicion: If the overall suspicion for abuse remains high despite a negative radiograph (e.g., based on extensive bruising, a highly concerning history, or other risk factors), a consultation with a child abuse specialist is still warranted.
Consider Skeletal Survey: If suspicion is high and widespread injury is a concern, the clinical team may decide to proceed to a full radiographic skeletal survey, which is rated May be appropriate (Disagreement) as an initial study but can become more appropriate as a next step if clinical concern persists.

If the radiograph is indeterminate: Occasionally, a finding may be equivocal (e.g., a possible healing fracture, a normal variant that mimics a fracture). In these cases, the next step is typically a discussion with the interpreting radiologist, preferably a pediatric radiologist. They may recommend follow-up radiographs in 10-14 days to look for signs of healing (e.g., callus formation) that would confirm a prior fracture.

Pitfalls to Avoid (and When to Get Help)

Navigating cases of suspected child abuse is clinically and emotionally challenging. Avoiding common pitfalls in the imaging workup is essential for an accurate diagnosis and ensuring child safety.

Pitfall 1: Stopping at a single negative radiograph. If high clinical suspicion for abuse persists based on history and other physical findings, a single negative X-ray of one body part is not sufficient to rule out abuse. Injury may be present elsewhere.
Pitfall 2: Not providing adequate clinical history. The radiologist’s interpretation is heavily dependent on the provided history. Always include the reason for suspicion (e.g., “concern for non-accidental trauma, inconsistent history for bruising on the left arm”) on the imaging requisition.
Pitfall 3: Delaying imaging. While this scenario does not involve an immediately life-threatening injury, delaying the diagnostic workup can delay intervention and leave a child in an unsafe environment. Imaging should be performed expeditiously once the concern is raised.

When to Escalate: If any signs of neurological compromise (altered mental status, seizure) or visceral injury (abdominal tenderness, guarding) develop, the patient’s clinical scenario has changed. Escalate immediately to a higher level of care and pursue the appropriate imaging pathway for CNS or visceral injury, which often involves CT or MRI.

Frequently Asked Questions

Why not perform a full skeletal survey on every child over 2 with suspected abuse?

In children over 24 months, abusive injuries are more often localized and may be suggested by physical exam findings like bruising or swelling. A targeted radiograph of the area of concern has a high diagnostic yield with significantly less radiation than a full skeletal survey. The ACR recommends a targeted approach first to adhere to the ALARA (As Low As Reasonably Achievable) principle, reserving the higher-dose skeletal survey for cases where an injury is found or clinical suspicion remains high without localizing signs.

If the targeted radiograph is positive for a fracture, is a skeletal survey then required?

Yes. The discovery of one fracture concerning for abuse significantly increases the likelihood of other occult injuries. At that point, a full radiographic skeletal survey is strongly recommended to assess the entire skeleton for additional fractures, which is critical information for the medical evaluation and child protection investigation.

What if I can’t identify a specific ‘area of interest’ to radiograph?

This is a key clinical challenge. If your suspicion for abuse is high but the physical exam is truly non-localizing (no specific tenderness, swelling, or bruising to guide you), this is the situation where a full radiographic skeletal survey may be considered as the initial step. This is reflected in the ACR’s rating of ‘May be appropriate (Disagreement)’ for the skeletal survey. A consultation with a child abuse pediatric specialist can be invaluable in making this decision.

Should I order a bone scan instead of radiographs?

No. For this initial evaluation, a whole-body bone scan is rated ‘Usually not appropriate’ by the ACR. While sensitive for detecting fractures, bone scans have lower specificity than radiographs and can be difficult to interpret for certain types of fractures common in abuse (like classic metaphyseal lesions). They also involve a higher radiation dose (pediatric RRL ☢☢☢☢ 3-10 mSv). Radiography remains the primary imaging modality.

Does a normal targeted radiograph rule out physical abuse?

No, a normal radiograph does not rule out abuse. Physical abuse can manifest in many ways, including injuries that are not visible on X-ray, such as bruising, internal injuries, or head trauma. The imaging findings are just one component of a comprehensive evaluation that includes a thorough history, physical exam, and consultation with child protection specialists.

Reviewed by Pouyan Golshani, MD, Interventional Radiologist — May 30, 2026