2 — Revenue Recognition

Disaggregation of Revenue

We disaggregate revenue from contracts with customers by geographic region and revenue type as we believe it best depicts the nature, amount, timing and uncertainty of our revenue and cash flow.

Revenue information by geographic region is as follows:


	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2019		2018		2019		2018
	(unaudited)				(unaudited)
United States	$	7,561,054	$	5,732,044	$	14,634,788	$	11,709,151
International		1,664,542		1,644,741		3,028,401		2,775,785
Total revenue	$	9,225,596	$	7,376,785	$	17,663,189	$	14,484,936

Revenue information by type is as follows:


	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2019		2018		2019		2018
	(unaudited)				(unaudited)
Devices:
MRI Compatible IV Infusion Pump Systems	$	4,550,542	$	3,590,538	$	8,743,296	$	7,216,160
MRI Compatible Patient Vital Signs Monitoring Systems		1,891,031		1,505,518		3,657,639		2,709,374
Total Devices Revenue		6,441,573		5,096,056		12,400,935		9,925,534
Disposables and Services		2,313,755		1,909,043		4,350,428		3,848,134
Amortization of extended warranty agreements		470,268		371,686		911,826		711,268
Total revenue	$	9,225,596	$	7,376,785	$	17,663,189	$	14,484,936

Contract Liabilities

Our contract liabilities consist of:


	June 30,		December 31,
	2019		2018
	(unaudited)
Advance payments from customers	$	75,830	$	180,425
Shipments in-transit		121,599		9,582
Extended warranty agreements		3,658,078		3,415,782
Total	$	3,855,507	$	3,605,789

Changes in the contract liabilities during the periods presented are as follows:


	Deferred
	Revenue
Contract liabilities, December 31, 2018	$	3,605,789
Increases due to cash received from customers		1,646,638
Decreases due to recognition of revenue		(1,396,920)
Contract liabilities, June 30, 2019	$	3,855,507


	Deferred
	Revenue
Contract liabilities, December 31, 2017	$	3,621,256
Increases due to cash received from customers		1,314,024
Decreases due to recognition of revenue		(1,008,979)
Contract liabilities, June 30, 2018	$	3,926,301

Capitalized Contract Costs

Our capitalized contract costs consist of:

Expense for the three and six months ended June 30, 2019 and 2018 related to the amortization of capitalized contract costs were immaterial to our financial statements.

December 31,

(unaudited)

Capitalized contract costs