<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2013-04-12</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001285550</issuerCik>
        <issuerName>MRI INTERVENTIONS, INC.</issuerName>
        <issuerTradingSymbol>MRIC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001574286</rptOwnerCik>
            <rptOwnerName>Pizzo Philip A.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MRI INTERVENTIONS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>ONE COMMERCE SQUARE, SUITE 2550</rptOwnerStreet2>
            <rptOwnerCity>MEMPHIS</rptOwnerCity>
            <rptOwnerState>TN</rptOwnerState>
            <rptOwnerZipCode>38103</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks>Power of Attorney is attached to this Form 3.</remarks>

    <ownerSignature>
        <signatureName>/s/ Oscar Thomas, by Power of Attorney for Philip A. Pizzo</signatureName>
        <signatureDate>2013-04-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
