Table 1.

Advantages and disadvantages of commonly used imaging techniques in CPPD

	Advantages	Disadvantages
Conventional radiology	Widely available Commonly used to image joints Low cost Low radiation exposure	Low sensitivity May miss CC in small joints Provides a 2D image
CT scanning	Widely available Quick exam Can detect CC in small joints Provides a 3D image	Not commonly used to image painful joints modality Higher radiation exposure High cost
MRI	Useful to diagnosis non-CPPD pathology Commonly used to image joints Provides a 3D image	High cost Poor sensitivity Poor specificity Lengthy exam
Ultrasound	Good sensitivity in experienced centers Good specificity in experienced centers Widely available in many clinics Can be performed at the bedside Absence of radiation exposure	Very operator dependent “Double contour sign” of gout may confuse interpretation Some joints are not easily accessible to examination

CC chondrocalcinosis