US Scrotum — Dictation, Appropriateness, and Dose for Residents

1. The Call Every Resident Dreads: “Stat Scrotal Ultrasound”

It’s 3 PM on a weekday. The ED calls with a stat: 17-year-old male, acute left scrotal pain, 4 hours duration. The differential is simple but the stakes are sky-high: testicular torsion versus epididymitis. One is a surgical emergency where minutes matter; the other is a course of antibiotics. Your attending is on the phone with a referring physician, but they’re going to want to see your preliminary read, and they’ll expect you to have definitively commented on intratesticular blood flow, compared it to the contralateral side, and looked for the whirlpool sign. This is one of those reads where there’s no room for ambiguity. Getting the key findings into a clear, structured report fast is the name of the game. For more high-yield guides like this, check out our free residents and fellows resource hub.

2. What a Scrotal Ultrasound Covers and What Attendings Look For

A scrotal ultrasound is the workhorse for evaluating acute scrotal pain, palpable masses, and trauma. It’s fast, uses no ionizing radiation, and with color Doppler, provides crucial physiological information. Your attending isn’t just looking for anatomy; they’re looking for a confident answer to a specific clinical question.

Common indications include:

• Acute scrotal pain (the classic torsion vs. epididymitis/orchitis workup)
• Palpable scrotal or testicular mass
• Evaluation of scrotal trauma
• Suspected hydrocele, varicocele, or spermatocele
• Localization of an undescended testis (cryptorchidism)
• Infertility workup (primarily for varicocele)

When you finalize your report, your attending expects to see a clear, structured assessment that addresses the core clinical concern. This means separate, commented-on sections for the testes, epididymides, and any extra-testicular findings, with a definitive impression that synthesizes these points.

3. When Should You Order a Scrotal Ultrasound? ACR Appropriateness Criteria

The American College of Radiology (ACR) provides clear guidance on when scrotal ultrasound is the right first step. For the most common presentations, it’s the definitive initial imaging modality.

For an adult or child with an acute onset of scrotal pain, without trauma or a known mass, a scrotal ultrasound with color Doppler is rated Usually Appropriate. It is the first-line, go-to study to differentiate testicular torsion from inflammatory causes like epididymitis.

Similarly, for a patient with a newly diagnosed palpable scrotal abnormality (with or without a history of trauma or infection), a scrotal ultrasound is also rated Usually Appropriate. It is the primary tool for characterizing masses as intratesticular or extratesticular, and cystic or solid—a critical distinction, as solid intratesticular masses are considered malignant until proven otherwise.

While MRI can be used for an indeterminate mass or for staging, and CT is used for staging confirmed cancer post-orchiectomy, the initial diagnostic evaluation of scrotal pathology almost always begins and ends with ultrasound.

4. Scrotal Ultrasound Imaging Protocol — Views, Doppler, and Key Parameters

A diagnostic scrotal ultrasound is more than just grayscale images. The protocol is designed to systematically evaluate anatomy and, critically, perfusion. Color and spectral Doppler are not optional—they are essential to the exam.

The technologist should acquire a standard set of images that allows for comprehensive evaluation and side-to-side comparison.

A common pitfall is failing to optimize Doppler settings. If the gain is too low or the velocity scale is too high, you can fail to detect the slow flow present in a normal testis, potentially leading to a false positive diagnosis of torsion. Always compare with the asymptomatic side using identical settings.

5. Radiology Report Template for Scrotal Ultrasound

Here is a solid, structured template you can use for your scrotal ultrasound dictations. You can adapt this into a macro in your speech recognition software.

Technique

Real-time grayscale and color Doppler ultrasound evaluation of the scrotum was performed using a high-frequency linear transducer. Spectral Doppler interrogation was also performed.

Findings

Right Testis: Measures [___] x [___] x [___] cm. The testicular echotexture is homogeneous. Normal intratesticular arterial and venous flow is demonstrated on color and spectral Doppler imaging. No focal mass, cyst, or calcification.

Left Testis: Measures [___] x [___] x [___] cm. The testicular echotexture is homogeneous. Normal intratesticular arterial and venous flow is demonstrated on color and spectral Doppler imaging. No focal mass, cyst, or calcification.

Right Epididymis: The epididymal head, body, and tail are normal in size and echotexture. Normal vascularity is seen.

Left Epididymis: The epididymal head, body, and tail are normal in size and echotexture. Normal vascularity is seen.

Extra-testicular Structures: There is a physiologic amount of fluid in the scrotal sac. No significant hydrocele, varicocele, or scrotal wall thickening. The visualized portions of the spermatic cords are unremarkable.

Impression

1. Normal bilateral testes and epididymides with symmetric and normal vascular flow.
2. No sonographic evidence of testicular torsion, epididymitis, or orchitis.
3. No testicular mass.
4. No significant hydrocele or varicocele.

Key Impression Phrases for Common Pathologies:

• For Torsion: “Absent blood flow in the [left/right] testis, compatible with testicular torsion. The spermatic cord demonstrates a whirlpool configuration. This is a urologic emergency.”
• For Epididymitis: “Enlarged and hyperemic [left/right] epididymis, consistent with epididymitis.” (Add “with reactive hydrocele” or “with extension to the testicle consistent with epididymo-orchitis” as needed).
• For a Mass: “Solid, hypoechoic, hypervascular intratesticular mass measuring [___] cm in the [location] of the [left/right] testis, highly suspicious for a primary testicular malignancy.”
• For Varicocele: “Dilated pampiniform plexus veins measuring up to [___] mm, which augment with Valsalva, consistent with a moderate varicocele.”

6. Looking for Free Scrotal Ultrasound Template Sources?

Building your own templates is a great way to learn, but you don’t have to start from scratch. Two great free repositories exist that are curated by radiologists. They are excellent resources for finding templates for nearly any study you’ll encounter on call.

• RadReport.org: The RSNA-curated template library. It’s comprehensive and a standard in the field.
• Radiology Templates (AU): An Australian-maintained library with a clean interface and practical, well-structured templates.

7. The Next-Level Move: AI-Assisted Structured Reporting

A good template is your safety net. But the real goal is to get so comfortable that you can dictate your positive findings in free form and have the report structure itself. This is where modern tools come in. When I was a resident, I’d spend time after a complex read just cleaning up the report format. Now, tools can do that for you.

GigHz Precision AI is designed for this exact workflow. You dictate the findings as you see them—”Left testis shows no internal blood flow on color Doppler and a whirlpool sign at the spermatic cord”—and the AI generates a clean, structured report using pre-loaded ACR and society-backed templates. It helps ensure all the key elements are present without you having to manually navigate a complex macro. It’s about spending more time on the images and less time on documentation. You can learn more about the AI-powered radiology report assistant on our site.

8. 3+ Months Free for Radiology Residents and Fellows

Look like a rockstar on your reports. We’re offering residents and fellows an extended free trial of GigHz Precision AI. The value prop is simple: dictate your positive findings in free form, and the AI generates a structured report using ACR and SIR templates, with the appropriate Clinical Decision Support (CDS) firing automatically when needed.

All we ask is for your feedback so we can keep improving the product for trainees.

To sign up, just provide these 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

The process is simple. No credit card, no long forms. Just reply to the application with that info, and we’ll get you set up. Ready to give it a try? Apply for the residents free-access program.

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 or storing patient health information (PHI). All data is handled within a secure, HIPAA-compliant environment.

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

No. GigHz Precision AI is browser-based and requires no local software installation or IT involvement. It works on any modern computer, including the PACS workstation or the call-room iPad, without interfering with hospital systems.

Does it work with PowerScribe or other voice recognition software?

Yes. It works alongside your existing dictation software. You can dictate as you normally would, then use the AI to structure and refine the report before signing off. It’s a complementary tool, not a replacement for your microphone.

Can I customize the report templates?

Yes. While the system comes pre-loaded with ACR and society-standard templates, you can create, modify, and save your own templates to match your personal style or your institution’s specific requirements.

What happens after my residency or fellowship ends?

Trainee accounts can be converted to standard attending accounts. We offer discounts for recent graduates to help you continue using the tools as you transition into practice.