Chest X-Ray (PA + Lateral) — Dictation, Appropriateness, and Dose for Residents

1. The Most Common Study in the World — And How Not to Miss Anything

The ED sends another “rule out pneumonia” chest x-ray. It’s the tenth one you’ve read today, and the list is still growing. The chest x-ray is the workhorse of radiology, but its familiarity is a trap. It’s easy to get into a rhythm, glance at the lungs, and sign off. But your attending expects a perfect, systematic rundown on every single one, even the “normals.” They’re looking for that subtle retrocardiac opacity, the blunted costophrenic angle on the lateral, or the early signs of vascular redistribution that you might miss if you’re just pattern-matching for a lobar consolidation. This isn’t just about speed; it’s about building the habits of a radiologist who never misses the subtle but critical finding. For more high-yield guides like this, check out the residents and fellows resource hub.

2. What a Chest X-Ray (PA + Lateral) Covers and What Attendings Look For

The two-view chest x-ray (CXR) is the initial imaging study for a vast range of cardiopulmonary complaints. From cough and fever to chest pain and shortness of breath, it provides a rapid, low-dose overview of the heart, lungs, mediastinum, and surrounding bony structures. While CT offers more detail, the CXR is often the first and only imaging needed to answer critical clinical questions.

Your attending expects a report that is systematic and complete, even when the findings are normal. They want to see that you’ve checked not just the lungs, but everything else.

**Common Indications:**

• Cough, dyspnea, fever (suspected pneumonia)
• Chest pain (after acute MI is excluded)
• Pre-operative evaluation
• Confirmation of tube and line placement (typically a portable AP view)
• Initial trauma screening

**Key Questions This Study Answers:**

• Is there pneumonia, atelectasis, or pulmonary edema?
• Is a pleural effusion or pneumothorax present?
• Is the heart enlarged (cardiomegaly)?
• Is the mediastinum widened?
• Are there any obvious rib fractures? (Though it’s not the most sensitive study for this.)
• Is there a lung mass or large nodule?
• Are indwelling lines and tubes (ETT, NG, central lines) in the correct position?

A solid report follows a consistent search pattern, often the “ABCDEF” mnemonic, to ensure nothing is overlooked.

3. Radiology Report Template for Chest X-Ray (PA + Lateral)

This template provides a structured approach to ensure all key areas are evaluated. Use it as a starting point for your macros in PowerScribe or your dictation system. The key is consistency; using the same structure every time builds the muscle memory to catch subtle findings.

Technique

PA and lateral views of the chest were obtained. The study is technically adequate. Inspiration is [adequate/suboptimal], with [number] posterior ribs visible. The patient is [not rotated/mildly rotated]. Penetration is [adequate/suboptimal].

Findings

LUNGS AND PLEURA: The lungs are clear. No focal consolidation, suspicious pulmonary nodule, or mass. No pneumothorax or pleural effusion. The costophrenic angles are sharp.

MEDIASTINUM AND HILA: The cardiomediastinal silhouette is within normal limits for size and contour. The cardiothoracic ratio is less than 0.5. The hilar and mediastinal contours are unremarkable.

AIRWAY: The trachea is midline.

BONES: The visualized osseous structures are unremarkable. No acute fracture or suspicious osseous lesion is identified.

SOFT TISSUES: The visualized soft tissues are unremarkable.

OTHER: [Mention any lines, tubes, or hardware and their position. E.g., “An endotracheal tube is in place with its tip approximately 5 cm superior to the carina. An enteric tube terminates in the stomach.”]

Impression

1. No acute cardiopulmonary process.

(Or, for positive findings):

1. [Finding, e.g., “Right lower lobe consolidation, consistent with pneumonia.”]

2. [Finding, e.g., “Small left pleural effusion.”]

3. [Finding, e.g., “Cardiomegaly.”]

4. Free Template Sources for All Your Rotations

Building a personal library of high-quality templates is one of the best things you can do as a trainee. While the template above is a great start for a CXR, you’ll need dozens more as you rotate through different subspecialties. Before you start building everything from scratch, know that two great free repositories exist, curated by radiologists for radiologists.

• RadReport.org: Maintained by the RSNA, this is an extensive library of peer-reviewed templates covering nearly every modality and subspecialty. It’s an invaluable resource.
• Radiology Templates (AU): This Australian-maintained site offers another excellent, well-organized collection of free templates that are practical and easy to adapt.

These are perfect for grabbing a solid starting point for that esoteric MSK MRI or complex body CT you haven’t seen in a while.

5. The Next-Level Move: From Free-Form Dictation to Structured Reports

Templates are essential, but they can feel rigid. You spot a finding and have to navigate back to the right section, plug in the details, and then jump to the impression. It can break your flow. The alternative is free-form dictation—just describing what you see as you see it—but that often leads to disorganized reports that attendings have to clean up.

This is where AI-powered dictation tools are changing the game. With GigHz Precision AI, you can dictate your positive findings conversationally, just as you’d present them to an attending. For example: “There’s a dense opacity in the right lower lobe obscuring the right hemidiaphragm, consistent with a pneumonia. Heart size is normal. No effusion.” The AI then takes that free-form input and automatically generates a perfectly structured report, placing each finding in the correct section and building a concise, numbered impression. It uses official templates from societies like the ACR and SIR, ensuring your reports meet the highest standards. This approach helps streamline your workflow without sacrificing the quality and structure your attendings expect.

6. When Should You Order a Chest X-Ray? ACR Appropriateness Criteria

Knowing when a chest x-ray is the *right* initial study is as important as reading it correctly. The American College of Radiology (ACR) provides evidence-based guidelines to help with these decisions.

For a patient with an **acute respiratory illness**, a PA and lateral chest x-ray is rated “Usually Appropriate” (9/9) if they have positive physical exam findings, abnormal vital signs, or other risk factors. Even with a negative physical exam and normal vitals, it remains “Usually Appropriate” (9/9).

In cases of **hemoptysis** (coughing up blood), whether massive or non-massive, a chest x-ray is also “Usually Appropriate” (6/9) as the initial imaging step. If the x-ray is negative but symptoms persist, a CT of the chest is often the next step.

For suspected **rib fractures** from minor trauma or after CPR, a chest x-ray is “Usually Appropriate” (7/9). For a suspected pathologic fracture (e.g., from a tumor), it is also “Usually Appropriate” (8/9), though CT or other modalities may be needed for further characterization.

However, for **routine imaging**—such as for a hospital admission or pre-operative clearance in a patient with no cardiopulmonary symptoms or history—a chest x-ray is “Usually Appropriate” (9/9) but its utility is often debated and should be performed based on institutional guidelines and clinical judgment. The ACR notes that routine CXR has limited utility in asymptomatic patients.

These criteria generally apply to initial imaging decisions. The choice of follow-up imaging depends on the initial findings and the evolving clinical picture.

7. How Much Radiation Does a Chest X-Ray Deliver?

Patients and referring clinicians often ask about radiation dose. Being able to contextualize it is a core competency. A standard two-view (PA and lateral) chest x-ray delivers a very small amount of radiation.

The estimated effective dose is between **0.02 and 0.10 mSv**.

To put that in perspective, this is significantly less than the average annual background radiation we all receive from natural sources (about 3 mSv per year). The dose from a two-view chest x-ray is roughly equivalent to the amount of background radiation a person would be exposed to over a few days. It is one of the lowest-dose studies in diagnostic imaging.

This low-dose profile is why the chest x-ray remains a cornerstone of initial diagnostic workups, providing critical information with minimal radiation risk.

8. The 3-Months-Free Offer for Radiology Residents and Fellows

3+ months free for radiology residents and fellows

If you want to look like a rockstar on your reports, we’re offering an extended free trial of GigHz Precision AI specifically for trainees. You can dictate your positive findings in free form, and the AI will generate a clean, structured report using official ACR and SIR templates. It helps you work faster while producing reports that are clear, complete, and exactly what your attendings want to see.

All we ask in return is your feedback so we can keep improving the product for the next generation of radiologists.

Signup is simple. There’s no credit card required and no long forms. Just provide the following three items:

1. Your PGY year (e.g., PGY-2, PGY-4)
2. Your training type (radiology residency or fellowship specialty)
3. Your training program / hospital name
4. (Optional) Your institutional email

To get started, apply for the residents free-access program and reply to the application email with the information above. We’ll get you set up.

9. Frequently Asked Questions

Is GigHz Precision AI HIPAA-compliant?

Yes. The platform is designed for de-identified workflows by default. It processes the clinical content of your dictation without requiring patient identifiers, ensuring compliance with HIPAA privacy and security rules.

Do I need my hospital’s IT department to set it up?

No. It’s a browser-based tool that requires no local installation or IT involvement. You can use it on any hospital workstation, your personal laptop, or even the call-room iPad. It works alongside your existing PACS and dictation system.

Does it work with PowerScribe or other dictation systems?

Yes. You can use it in parallel with any existing dictation system. Most residents dictate into Precision AI, copy the structured report with a single click, and paste it directly into their PACS/RIS dictation window.

Can I use my own custom templates?

Yes. While the system comes pre-loaded with ACR and SIR standard templates, you can easily add, customize, and save your own templates or those preferred by your attendings for specific rotations.

What happens after my residency or fellowship ends?

Trainee accounts are intended for use during training. After you graduate, you can transition to a standard attending physician plan. We offer discounts for recent graduates to help you get started in your new role.

Free GigHz Tools That Pair With This Article

Three free tools that complement the material above:

• ACR Appropriateness Criteria Lookup — Type an indication or clinical scenario in plain language and get the imaging studies the ACR rates for it, with adult and pediatric radiation levels. Built directly from 297 ACR topics, 1,336 clinical variants, and 15,823 procedure ratings.
• GigHz Imaging Protocol Library — A searchable library of 131 imaging protocols with the physics specs surfaced and the matching ACR Appropriateness Criteria alongside. Plain-English narratives readable in 60 seconds, organized by modality.
• GigHz Radiation Dose Calculator — Pick the imaging studies a patient has had and see total dose in millisieverts (mSv) with comparisons to natural background radiation, transatlantic flights, and chest X-rays. Useful for shared decision-making.

Reviewed by Pouyan Golshani, MD, Interventional Radiologist — May 7, 2026