15. Segment information

Our business is strategically aligned into three segments: Medical Imaging, Ultrasound, and Security and Detection. Our business segments are described as follows:

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Medical Imaging primarily includes systems and subsystems for CT and MRI medical imaging equipment as well as state-of-the-art, selenium-based detectors for screening of breast cancer and other diagnostic applications in mammography.

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Ultrasound includes ultrasound systems and transducers primarily in the urology, surgery, and anesthesia markets.

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Security and Detection includes advanced threat detecting CT systems utilizing our expertise in advanced imaging technology, primarily used in the checked baggage screening at airports worldwide.

The tables below present information about our reportable segments:

	Three Months Ended					Nine Months Ended
	April 30,					April 30,
(in millions)	2018		2017			2018		2017
Product revenue:
Medical Imaging	$	59.8	$	68.2		$	173.8	$	205.9
Ultrasound		42.0		34.8			122.7		110.7
Security and Detection		15.4		17.8			53.1		54.8
Total product revenue	$	117.2	$	120.8		$	349.6	$	371.4
Engineering revenue:
Medical Imaging	$	1.6	$	1.3		$	4.0	$	3.1
Ultrasound		0.2		-			0.3		0.2
Security and Detection		1.0		0.1			2.1		0.1
Total engineering revenue	$	2.8	$	1.4		$	6.4	$	3.4
Net revenue:
Medical Imaging	$	61.4	$	69.5		$	177.8	$	209.0
Ultrasound		42.2		34.8			123.0		110.9
Security and Detection		16.4		17.9			55.2		54.9
Total net revenue	$	120.0	$	122.2		$	356.0	$	374.8
Income (loss) from operations:
Medical Imaging (A)	$	5.4	$	12.2		$	17.6	$	31.3
Ultrasound (B)		-		(79.3	)		5.7		(89.7	)
Security and Detection		1.9		2.5			7.6		7.2
Total income from operations		7.3		(64.6	)		30.9		(51.2	)
Total other income (loss), net		0.3		0.1			1.5		(0.4	)
Income before income taxes	$	7.6	$	(64.5	)	$	32.4	$	(51.6	)

	As of		As of
	April 30,		July 31,
(in millions)	2018		2017
Identifiable total assets by segment:
Medical Imaging	$	161.6	$	169.1
Ultrasound		136.6		133.6
Security and Detection		43.9		36.0
Total reportable segment assets		342.1		338.7
Corporate assets (C)		235.6		197.0
Total identifiable assets	$	577.7	$	535.7

(A)	Includes restructuring charges of $0.0 million and $0.2 million for the three months ended April 30, 2018 and April 30, 2017, respectively, and $0.1 million and $0.4 million for each of the nine months ended April 30, 2018 and April 30, 2017, respectively.

(B)	Includes restructuring charges of $0.0 million and $1.8 million for each of the three months ended April 30, 2018 and April 30, 2017, respectively, and $0.6 million and $1.9 million for the nine months ended April 30, 2018 and April 30, 2017, respectively.

(C)	Includes cash, cash equivalents, and short-term marketable securities of $165.3 million and $135.2 million as of April 30, 2018 and July 31, 2017, respectively.