KDP categories · Top KDP authors
Diagnostic Imaging (Radiology, Books): Amazon KDP category data
Amazon Books Best Sellers data for Diagnostic Imaging (Radiology, Books), updated Nov 3, 2026: median price $88.56, median 15 reviews, average rating 4.7 and a KDPTop opportunity score of 31/100 (highly competitive).
| Price range (middle 50%) | $40.33 – $143 |
|---|---|
| Average rating | 4.7 |
| New releases (90 days) | 14% |
| Books on the list | 100 |
| Store | Books |
What stands out
- At $88.56 its median price beats 99% of Books categories, leaving more margin per copy.
- Its median reviews are 32% of the parent category Radiology (47), one of the easier corners under it.
- 14% of its best sellers came out in the last 90 days, more than in 78% of Books categories: readers here keep buying new titles.
Top 10 Diagnostic Imaging best sellers
-
Examination Review for Ultrasound: Abdomen and Obstetrics & Gynecology
by STEVEN M. PENNY MA RT(R)) RDMS
- List rank#1
- Price$94.48
- Rating4.6
- Reviews236
-
Mosby's Comprehensive Review of Radiography: The Complete Study Guide and Career Planner
by William J. Callaway MA RT(R)
- List rank#2
- Price$85.99
- Rating4.8
- Reviews321
-
Fenbendazole & Ivermectin Protocols: A Patient and Caregiver Guide to Fenbendazole, Ivermectin, and Making Informed Decisions With Your Care Team
by Lauren Segal
- List rank#3
- Price$8.29
- Reviews-
-
Radiologic Physics - War Machine
by Prometheus Lionhart M.D.
- List rank#4
- Price$41.44
- Rating4.7
- Reviews207
-
Textbook of Clinical Echocardiography
by Catherine M. Otto MD
- List rank#5
- Price$138
- Rating4.6
- Reviews52
-
Introduction to Sonography and Patient Care
by Steven M. Penny M.A. RT (R) RDMS
- List rank#6
- Price$79.98
- Rating4.6
- Reviews189
-
Clinical Radiology Made Ridiculously Simple, Edition 2
by Hugue Ouellette M.D.
- List rank#7
- Price$29.39
- Rating4.6
- Reviews211
-
Felson's Principles of Chest Roentgenology, A Programmed Text: A Programmed Text
by Lawrence R. Goodman MD FAAC
- List rank#8
- Price$83.82
- Rating4.7
- Reviews165
-
The Cath Lab Tech Protocols Bible: Cath Lab Technologist Orientation Manual and RCIS Study Guide: Step-by-Step Procedures, Table Setup, Hemodynamics, Radiographic Views and 200 Practice Questions
by Vania Snee
- List rank#9
- Price$36.99
- Rating4.6
- Reviews31
-
An Introduction to the Event-Related Potential Technique, second edition (Mit Press)
by Steven J. Luck
- List rank#10
- Price$64.35
- Rating4.9
- Reviews90
FAQ
Is Diagnostic Imaging a good niche for Amazon KDP?
Its KDPTop opportunity score is 31/100, which makes it highly competitive. The median best seller has 15 reviews and sells for $88.56.
How many reviews do you need to rank in Diagnostic Imaging?
The median best seller has 15 reviews, and 81% of them have fewer than 100.
What do Diagnostic Imaging best sellers cost?
The median price is $88.56; half of the best sellers are priced between $40.33 and $143.
Can new books break into Diagnostic Imaging?
14% of the current best sellers were released in the last 90 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.