Table 1.

Summary of the recommended technical parameters and accepted alternatives for WBLDCT in MM [17]

Parameters	Recommendation	Alternative
No. of detector rows	At least 16
Field of view	From the cranial vertex to the prox. metaphyses of both tibiae incl. both humeri
Regular patient positioning	Supine with both arms aside and above the skull with as little bending of the elbows as possible	Supine with both arms alongside the body underlaid with armrests to lift them above spine level
Positioning of obese or PRM	Supine with both arms placed in front of the body with both hands folded
Tube voltage (kV)	120	140
Tube current–time product (mAs)	50–70	14–25
Collimation	0.5–1.5 mm	–
Reconstruction convolution kernel	Combination of a sharp, high-frequency “bone” kernel and a smoother “soft-tissue” kernel	One singular intermediate, middle-frequency kernel permitting acquisition of all images with different window settings*
Iterative reconstruction algorithms	Requested, if possible, to reduce image noise and artifacts while reducing radiation exposure
Thickness/increment of axial slices	2/1 mm	3/1.5 mm
MPRs	requested in sagittal and coronal direction and parallel to the long axis of the prox. extremities

Abbreviations: No.: number; prox.: proximal; incl.: inclusive; PRM: persons with reduced mobility; kV: kilovoltage; mAs: milliampere-seconds; mm: millimeters; MPRs: multiplanar reconstructions

* With the limitation that attenuation measurements of peripheral intramedullary lesions should not be performed on bone kernel-reconstructed images that were set on the soft-tissue window, but on soft-tissue kernel-reconstructed images