Property and Equipment, Net - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 24,840	$ 24,708
Less: accumulated depreciation	(16,695)	(15,487)
Property and equipment, net	8,145	9,221
Medical diagnostic equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	15,042	14,826
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	400	432
Office equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	1,556	1,556
Laboratory equipment and software
Property, Plant and Equipment [Line Items]
Total property and equipment	5,226	5,148
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	608	580
Construction in process
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 2,008	$ 2,166