I am a radiology physician from California, USA.
radiologypics has written 324 posts for RADIOLOGYPICS.COM

ABR Core Exam Recalls

The American Board of Radiology Core Examination is administered every June in Tucson and Chicago. Given that residents are likely starting to ramp up their studying efforts this time of year, I thought I should write this post on recall questions. The more time that passes, the fewer questions I will remember to post below. So without … Continue reading

Using Ionizing Radiation in Children – What do you know?

I’m curious to understand what the readers of know about ionizing radiation, so I’ve created a few questions that I’d like to get your answers to below.

Radiology Physics – Radioactive Material Package Labels

Packages that arrive to a nuclear medicine department may be labeled with special radioactive labels that have specific allowable limits of radiation depending on the label. As part of the radioisotope safety examination, candidates should be aware of what these labels mean. The captions of each label below have the specific amounts of radiation that each … Continue reading

Radiology Physics – Comparisons of Mammography and General Radiography

The test question writers at the American Board of Radiology seem to be obsessed with comparing mammography and general radiography. The below table should be high yield information for the ABR Core examination and certifying examination. In simple terms, mammography is lower energy, takes longer, generally uses different targets and filters, and is higher resolution. Those are … Continue reading

Radiology Physics – Radionuclides

As a third installment in a series of articles on radiology physics, I’ve included a good summary table of important radionuclides to know for the ABR Core examination. This test also contains a component of the Radioisotope Safety Examination (RISE) which must be passed to obtain an Authorized User status from the ABR. Part of the … Continue reading

Radiology Physics – Acute Radiation Syndromes

In continuation of a series of posts on radiology physics as preparation for the ABR Core Examination, another important set of threshold doses to consider are those for acute radiation syndromes. Acute Radiation Syndrome (ARS), or radiation sickness, is a serious illness that can happen when a person is exposed to very high levels of radiation, … Continue reading

Radiology Physics – Deterministic effects

For radiology residents preparing for the ABR Core Examination, memorizing the endless numbers that they need to know can seem like a daunting task. One section of the test which is particularly dense with these numbers is the physics section. In preparing for the 2015 administration next week, I thought it would be nice to … Continue reading

Chiari 1 Malformation

History: 15 year old boy with headache and arm numbness. This is a case of a Chiari 1 malformation, which is is defined as caudal extension of the cerebellar tonsils 5 mm below the foramen magnum. Syringomyelia (syrinx) is seen in one-half of the patients, and it is not associated with other neurulation malformations. There are three main types … Continue reading

Osteogenesis Imperfecta

History: infant who died shortly after birth Osteogenesis imperfecta (OI), also known as brittle bone disease, is a congenital bone disorder characterized by brittle bones that are prone to fracture. People with OI are born with defective connective tissue, or without the ability to make it, usually because of a deficiency of type I collagen. On … Continue reading

Breast Lipoma

History: 50 year old woman presenting for screening mammogram. This is a case of a breast lipoma. This is a benign tumor of the breast composed of mature adipose (fat) cells. They can be present in the breast, axilla, chest wall, or subcutaneous tissues, and typically appear circumscribed, oval or round. If they necrose, they … Continue reading