Dr. Roderic Pettigrew, PhD

Nov 26, 2017

3D medical imaging of kidneys and renal blood vessels shown in three anatomical views

Medicare payment for cardiac CT declining

September 30, 2026

ASTRO cancer care facility entrance sign with blue letters and pink base decorated with white and yellow flowers

ASTRO: Shorter SBRT regimens improve patient physical function

September 30, 2026

Free Webinar: CT Contrast Injection Reimagined

Free Webinar: CT Contrast Injection Reimagined

September 22, 2026

ASTRO: Incoming president talks 2026 highlights, previews next year

September 30, 2026

Medicare payment for cardiac CT declining

By Amerigo Allegretto

Inflation-adjusted Medicare payment for cardiac CT declined 27% to 68% between 2010 and 2026, despite guideline endorsement.

September 30, 2026

3D medical imaging of kidneys and renal blood vessels shown in three anatomical views

ASTRO: Shorter SBRT regimens improve patient physical function

By Amerigo Allegretto

Patients who underwent five treatments of SBRT for pancreatic cancer had better physical function and experienced less fatigue.

September 30, 2026

ASTRO cancer care facility entrance sign with blue letters and pink base decorated with white and yellow flowers

Making AI matter at the point of care

In a new column, Kelly Londy of GE HealthCare describes what's needed to unlock the benefits of AI in radiology.

September 30, 2026

ASTRO: Incoming president talks 2026 highlights, previews next year

Next year's theme in Chicago, IL, is "The Full Spectrum: From Discovery to Delivery, Expanding What's Possible."

September 30, 2026

ASTRO: Radiosurgery may extend survival for SCLC with brain metastases

By Erik L. Ridley

Patients receiving SRS lived almost 18 months after treatment.

September 29, 2026

ASTRO cancer care facility entrance sign with blue dimensional letters and purple planter with white and yellow flowers

Video from ASTRO: How is the RPT boom impacting radiation oncology?

The boom in radiopharmaceutical therapy (RPT) driven by theranostics is having a significant impact on radiation oncology.

September 29, 2026

ASTRO cancer care organization sign with blue letters and lavender base decorated with white and yellow flowers

Cardiac MRI-derived metrics predict adverse cardiac disease outcomes

By Erik L. Ridley

Diastolic function markers from cardiac MRI yielded incremental value over clinical risk factors and traditional imaging markers.

September 29, 2026

Glowing red anatomical illustration of a human heart with visible coronary arteries and internal chambers on dark background

Bosniak predicts renal cancer with unfavorable histologic features

By Amerigo Allegretto

The 2019 version of the Bosniak risk classification system can predict cancer in cystic renal masses with unfavorable histology.

September 29, 2026

Four abdominal CT scan images with arrows indicating anatomical features for medical diagnosis

ASTRO: Radiosurgery reduces suicidal ideation in major depressive disorder

Before treatment, 14 of the 20 patients (70%) reported suicidal thoughts, while after treatment, one patient (5%) did.

September 29, 2026

Professional presenter at ASTRO conference podium delivering research presentation with laptop and display screen

ASTRO: Psychotherapy after cancer diagnosis tied to lower mortality

Patients with depression had an 11% higher risk of cancer-specific mortality compared with those without it.

September 28, 2026

2026 ASTRO Annual Meeting promotional graphic featuring stylized numbers and Boston skyline illustration on dark background

EHR data may miss women eligible for lung cancer screening

By Amerigo Allegretto

Smoking history may be underestimated in over one-third of lung cancer screening-eligible women identified by self-reporting.

September 28, 2026

Middle-aged woman in light blue shirt sitting on gray couch with hand on chest

ASTRO: 10-year outcomes support hypofractionated radiotherapy in breast cancer

While hypofractionated radiotherapy is well established for whole-breast irradiation after breast-conserving surgery, there is little long-term data on its use post-mastectomy.

September 28, 2026

Speaker presenting at ASTRO's 68th Annual Meeting plenary session with panelists seated at table

Page 1 of 253