Exhibit 31.1 CERTIFICATION I, Anthony A.
 Lombardo, certify that:1.
I have reviewed this
 annual report on Form 10-K of E-Z-EM, Inc.;2.
Based on my knowledge,
 this report does not contain any untrue statement of a material fact or omit
 to state a material fact necessary to make the statements made, in light of
 the circumstances under which such statements were made, not misleading with
 respect to the period covered by this report;3.
Based on my knowledge, the
 financial statements, and other financial information included in this
 report, fairly present in all material respects the financial condition,
 results of operations and cash flows of the registrant as of, and for, the
 periods presented in this report;4.
The registrants other
 certifying officer and I are responsible for establishing and maintaining
 disclosure controls and procedures (as defined in Exchange Act Rules
 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as
 defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and
 have:(a) Designed
 such disclosure controls and procedures, or caused such disclosure controls
 and procedures to be designed under our supervision, to ensure that material
 information relating to the registrant, including its consolidated
 subsidiaries, is made known to us by others within those entities,
 particularly during the period in which this report is being prepared;(b) Designed
 such internal control over financial reporting, or caused such internal
 control over financial reporting to be designed under our supervision, to
 provide reasonable assurance regarding the reliability of financial reporting
 and the preparation of financial statements for external purposes in
 accordance with generally accepted accounting principles;(c)
 Evaluated the effectiveness of the registrants disclosure controls and
 procedures and presented in this report our conclusions about the
 effectiveness of the disclosure controls and procedures, as of the end of the
 period covered by this report based on such evaluation; and(d)
 Disclosed in this report any change in the registrants internal control over
 financial reporting that occurred during the registrants most recent fiscal
 quarter (the registrants fourth fiscal quarter in the case of an annual
 report) that has materially affected, or is reasonably likely to materially
 affect, the registrants internal control over financial reporting; and5.
The registrants other
 certifying officer and I have disclosed, based on our most recent evaluation
 of internal control over financial reporting, to the registrants auditors
 and the audit committee of the registrants board of directors (or persons
 performing the equivalent functions):(a) All
 significant deficiencies and material weaknesses in the design or operation
 of internal control over financial reporting which are reasonably likely to
 adversely affect the registrants ability to record, process, summarize and
 report financial information; and -98-   (b) Any fraud,
 whether or not material, that involves management or other employees who have
 a significant role in the registrants internal control over financial
 reporting.Date: August 16,
2007/s/ Anthony
 A. LombardoAnthony A.
 Lombardo, President,Chief
 Executive Officer and Director-99-